uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/python-modules/cppe/default.nix

@@ -0,0 +1,54 @@
+{ buildPythonPackage
+, lib
+, stdenv
+, cmake
+, cppe
+, eigen
+, python
+, pybind11
+, numpy
+, h5py
+, numba
+, scipy
+, pandas
+, polarizationsolver
+, pytest
+, llvmPackages
+}:
+
+buildPythonPackage rec {
+  inherit (cppe) pname version src meta;
+
+  # The python interface requires eigen3, but builds from a checkout in tree.
+  # Using the nixpkgs version instead.
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "external/eigen3" "${eigen}/include/eigen3"
+  '';
+
+  nativeBuildInputs = [
+    cmake
+    eigen
+  ];
+
+  dontUseCmakeConfigure = true;
+
+  buildInputs = [ pybind11 ]
+    ++ lib.optional stdenv.cc.isClang llvmPackages.openmp;
+
+  NIX_CFLAGS_LINK = lib.optional stdenv.cc.isClang "-lomp";
+
+  hardeningDisable = lib.optional stdenv.cc.isClang "strictoverflow";
+
+  checkInputs = [
+    pytest
+    h5py
+    numba
+    numpy
+    pandas
+    polarizationsolver
+    scipy
+  ];
+
+  pythonImportsCheck = [ "cppe" ];
+}